If Bo manages to place his mines on the IKE turret in Siege or on the Heist safe, he can activate Tripwire as soon as he can to deal immediate high damage to the safe/IKE turret.
Bo's traps can knockback enemies, so if placed correctly, it can knock enemies into the poison gas in Showdown. With Bo's Snare a Bear, Bo's traps will instead stun, giving you ample time to quickly defeat opponents without any risk of dying, making this effective in Knockout, Lone Star, and Bounty. In Duo Showdown, Bo can be used with a high-damaging Brawler, such as Darryl or Shelly to finish off a stunned enemy.
Bo's fairly high health can be used to walk the Ball into the enemy goal in Brawl Ball. In addition, Bo's traps can be used to destroy enemy cover and goalposts. Clearing up certain maps could be beneficial due to Bo's relatively long range, especially if he has teammates with long-ranged abilities. Hence, Bo is a viable Brawler in Brawl Ball.
Recommended Build
Try to use Bo's Tripwire Gadget before the enemy steps onto it, since the 1.5 second delay allows the enemy to escape. Also, note that the 1.5 second delay takes longer than its normal 1.15 seconds.
When Bo's Super is used, the third trap is set slightly after the other two. Thus, activating Bo's Tripwire Gadget immediately after using his Super only explodes two traps. In Brawl Ball, this can be used to explode walls or obstacles in front of the enemies' goal effectively, which makes it much easier to score. This also leaves one trap hidden until an enemy steps on it, so you can use the last trap for other strategies such as bait for the Ball.
When an enemy tries to disarm your traps, use Bo's Tripwire Gadget to catch them off guard and deal instant damage. Coupled with Bo's second Star Power, Bo can passively force enemies to not disarm his mines. This allows him to control open areas simply by selecting this Gadget.
Bo's Circling Eagle is really useful on maps filled with bushes, with his doubled radius of vision in bushes. Some maps include Cavern Churn, Feast or Famine, Island Invasion, Snake Prairie, and Sapphire Plains. Since you have a sight advantage, avoid getting close to tanks or other high-damaging Brawlers. Place his traps to cover the lane with only one passageway while you can cover the other side with your increased sight. When played properly, Bo can quite easily dominate bushy maps. This is really useful in 3v3, for his increased sight in bushes is shared with teammates too.
Bo's Snare a Bear Star Power can come into great effect in several Special Events. If one is stunned, you and your teammates can deal massive damage to them temporarily without being targeted. This includes the Bosses in Super City Rampage, Robo Rumble and Boss Fight.
Strategies
Bo's traps can be lobbed over walls. This is great when you know there's a Brawler hiding in a bush opposite to you behind a wall. Throw it ahead of them, so they're forced to walk into it, as they cannot go through the wall unless they are airborne or have a destructive Super charged up. With the Tripwire Gadget, you can deal immediate damage to them.
Bo always shoots three arrows from left to right, so you can take advantage of this to control the spread of your arrows. If you want to concentrate fire in a small area, move left while firing, allowing more arrows to hit a single target. For an attack with more spread, move right. The space between each arrow will be increased, giving the attack a wider spread. However, the former strategy only works on stationary targets as Brawlers will most likely be moving and can thus dodge all three arrows.
Other
Bo's Super can be used to defend critical areas and choke points on the battlefield. Enemies heading in the area will take high damage when they step on the traps. It can be utilized to cover the Gem mine in Gem Grab to damage enemy Brawlers who are gathering Gems from it. It can also be used to cover key choke points in Showdown, zone(s) in Hot Zone and Bolt spawning areas in Siege, making Bo an ideal control Brawler.
Changelog
22/06/17 Bo's reload speed was decreased by 13%.
27/06/17 Bo's health was increased to 900 (from 800).
16/08/17 Bo's reload time was decreased to 1.7 seconds (from 2).
04/09/17 Bo's Super now deploys 4 mines (from 3). Bo's rarity was changed to Super Rare (from Epic). The radius of the mines was made to look visually larger.
12/09/17 Bo's main attack damage was increased to 100 (from 80) per arrow. His health was decreased to 800 (from 900). His Super now deploys 3 mines (from 4) and its mines no longer has a pushback effect.
07/12/17 Bo's Super damage was increased to 1440 (from 1200) per mine. His mines once again have a pushback effect. The health and damage statistics of all Brawlers were multiplied by 4. Bo's Circling Eagle Star Power was added.
18/12/17 Bo's Circling Eagle Star Power visibility range was increased to 6 tiles (from 5).
16/01/18 Bo's health was increased to 3600 (from 3200).
21/03/18 Bo's Super mines explosion delay was decreased to 1.15 seconds (from 1.3). Every Brawler's movement speed was increased by 70 points, increasing Bo's base movement speed to 720 (from 650). All Brawlers' projectile speeds are increased by 9%.
23/03/18 Bo's main attack projectile size was increased by 40%.
21/05/18 Bo's rarity was changed to Common (from Super Rare).
18/06/18 Bo's main attack damage was increased to 420 (from 400) per arrow.
29/01/19 Bo's main attack damage was increased to 480 (from 420) per arrow. His Circling Eagle Star Power visibility range was decreased to 4 tiles (from 6). He now has voice lines.
27/02/19 Bo's main attack damage was increased to 500 (from 480) per arrow.
15/04/19 Bo was remodeled.
11/06/19 Bo's main attack damage was increased to 520 (from 500). The number of hits necessary to charge his Super was decreased to 10 hits (from 11).
26/06/19 The Gold Mecha and Light Mecha Bo skins were added.
19/07/19 The Mecha Bo skin was added.
21/08/19 Bo's Snare a Bear Star Power was added.
29/08/19 Bo's Circling Eagle Star Power visibility range was increased to 5 tiles (from 4).
23/10/19 Bo's Super now deploys his mines in a fixed pattern.
17/03/20 Bo's Super Totem Gadget was added.
17/04/20 The Horus Bo skin was added. It was featured as a Supercell Make skin.
13/05/20 Bo's Super deployment pattern is now correctly mirrored for both teams.
29/07/20 Bo's Tripwire Gadget was added.
10/09/20 The number of hits necessary to charge Bo's Super was decreased to 9 hits (from 10). His Super recharge rate was decreased slightly.
22/10/20 Bo's Tripwire Gadget now has a 1.5 second delay after activation before the mines explode.
23/10/20 The Underworld Bo skin was added. It was featured as a Supercell Make skin.
29/10/20 Fixed an issue where Bo's Tripwire Gadget didn't work when he was defeated while using Tripwire.
16/01/21 The Warrior Bo Skin was unlockable by winning the Duo Showdown in-game challenge.
08/02/21 Bo's Super Totem Gadget effectiveness gets weaker the more it charges a player's Super. The first Super charge is charged at full speed. Supers afterward charge 1% less per second until the Totem reaches a 50% reduced charging rate. The effect is tracked individually per player.
15/03/21 Bo's main attack damage was increased to 560 (from 520) per arrow. Bo, Warrior Bo, Horus Bo, Underworld Bo, Mecha Bo, Light Mecha Bo, and Gold Mecha Bo received facial animations.
16/06/21 Bo's Super Totem Gadget no longer loses Super charging effectiveness over time. His Super Totem Gadget now gradually loses health overtime after being deployed until it's destroyed.
25/08/21 Bo's main attack damage was increased to 600 (from 560) per arrow. Bo's True Silver and True Gold skins were added.
06/10/21 Fixed an issue that made Horus and Underworld Bo have a larger attack explosion radius compared with Bo's other skins.
27/10/21 Bo's class was changed to Damage Dealer (from Fighter). Fixed an issue with Bo's mines to stay after a Brawl Ball goal.
20/12/21 The Ho Ho Ho Bo skin was added. It was featured as a Brawlidays 2021 skin.
07/03/22 The Wasp Bo skin was added. It was featured as a Power League exclusive skin for Brawl Pass Season 11.
27/04/22 Bo's main attack projectile speed was increased by 7%.
12/12/22 Bo's rarity was changed to Epic (from Common).
28/02/23 Bo's Super Totem Gadget radius was increased to 5.33 tiles (from 2.67). Bo's Super Totem Gadget was reworked from dropping a totem that charged the Super of him and his allies over time to dropping a totem that increases the Super charging rate by 50% for him and his allies. Bo's class was changed to Controller (from Damage Dealer).
25/04/23 Light Mecha Bo now costs 49 Gems (from 10000 Star Points). Gold Mecha Bo now costs 49 Gems (from 50000 Star Points). Wasp Bo now costs 149 Gems (from 25000 Star Points).
28/06/23 Fixed an issue with Bo having unlimited Supers on the ground.
05/09/23 All Brawlers' health and damage were increased from 5% to 10% with each Power Level.
24/10/23 Bo's flavor text was changed from "Bo fires three explosive arrows toward his targets. His Super ability places a trio of hidden, explosive mines on the ground!" to "Bo has survived in the Rumble Jungle for a long time. It's all the more impressive considering he's been using toys he got on sale from the Gift Shop."
09/11/23 The Brother and Supreme Bo skins were added. They were featured as Warrior's Journey skins.
12/12/23 Bo's main attack damage was increased to 700 (from 600) per arrow. The number of hits necessary to charge his Super was decreased to 8 hits (from 9).
11/01/24 Bo's main attack damage was decreased to 640 (from 700) per arrow. The number of hits necessary to charge his Super was increased to 9 hits (from 8).
23/04/24 All Mecha Bo skins' takedown visual effects were reworked.